JP3505929B2 - Vacuum cleaner hose - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose for a floor-moving type vacuum cleaner in which a cleaner body is moved via a hose.

[0002]

2. Description of the Related Art FIG. 10 shows a conventional electric vacuum cleaner, in which an electric vacuum cleaner 1 has an electric blower 2, an electric controller 3, a dust collector, etc., and an intake port 4 is formed on the front surface thereof. It is the main body. Reference numeral 5 is provided with an insertion pipe 6 having one end inserted into an air intake port 4 of an electric vacuum cleaner and fixed, and an operation pipe 10 fixed at the other end with an extension pipe 9 communicating with a floor nozzle 8 containing an agitator driving electric motor 7. It's a hose. The operation pipe 10 is provided with a remote control operation body 11 and an electric motor operation body 12, and a signal from the remote control operation body 11 is transmitted to an electric controller via a remote control conductive wire embedded in the hose 5. 3 and controls the rotation speed of the electric blower 2 and the like. Further, another power supply conductive wire is also embedded in the hose 5, and the power is supplied from the cleaner main body 1 to the electric motor 7 of the floor nozzle via the power supply conductive wire, the electric motor operating body 12 and the cord 13 along the extension pipe. Power is supplied to the electric motor 7, and the start / stop control of the electric motor 7 for driving the agitator is performed by operating the electric motor operating body 12.

The hose insertion pipe 6 is provided with a buckle 14 at a part in the outer peripheral direction of the insertion pipe 6 in order to maintain the insertion state of the cleaner body 1 into the intake air 4. Then, you more predicates attached to the connection configuration of the hose 5 and the insertion pipe 6.
The hose 5 on the side of the insertion pipe 6 in FIGS.
A rotary pipe 15 is connected to the end of the rotary pipe 15, and the rotary pipe 15 is fitted into the insertion pipe 6 so as to be rotatable in the circumferential direction.

The rotary pipe 15 has two annular recessed grooves 16 and 17 on the outer peripheral surface of the tip end thereof, and a flange 1 having a plurality of lead wire locking grooves 18 formed at a substantially central portion in the longitudinal direction.
9 is provided.

On the other hand, reference numerals 20 and 21 denote two annular rail bases fitted on the outer periphery of the front side of the flange 19 of the rotary pipe 15 and having groove portions 22 and 23 formed in the longitudinal direction of the inner peripheral surface.
A plurality of ribs 24 formed in the outer peripheral direction of the rotary pipe 15.
It is configured to be fitted outside and to prevent rotation.

Two grooves are formed in the circumferential direction of the outer peripheral surfaces of the ring-shaped rail bases 20 and 21, and ring-shaped rails 30, 31, 32, 3 made of ring-shaped conductive wires are formed in each groove.
3 is a bent portion 34, 35, 36 having both ends bent,
37 is attached to the rail stands 20 and 21. The bent portions 34 of these ring-shaped rails 30, 31, 32, 33,
Lead wires 38, 3 soldered to 35, 36, 37
9, 40 and 41 are conductive wires for remote control of the hose 5, conductive wires for power feeding, the rotating pipe 15 and the rail stand 20,
Wiring is performed by utilizing the gap between 21. Further, the inner diameters of the annular rail bases 20 and 21 are configured to be larger than the annular recessed groove provided in the rotating pipe 15.

Next, an elongated box portion 42 is provided in the longitudinal direction of the outer peripheral surface of the insertion pipe 6. The box portion 42 is fixed by hooking the hook portion 43 of the insertion pipe 6 and tightening the other with a screw 44. The buckle 14 is movably attached to the front of the box portion 42 and is constantly urged in the locking direction via a spring 45. Further, four contact pieces 47, 48, 49, 50 are attached in parallel to the back surface of the lid 46. These contact pieces 47, 48, 49, 50
Is a conductive plate having a spring property formed in a substantially mountain shape, and is configured to contact and press the ring-shaped rails 30, 31, 32 and 33.

Contact pieces 48, 49 are provided in front of the box portion 42.
A pair of remote control terminals 52 and 53 connected to the lead wire 51 are protruded, and a pair of power supply terminals 54 and 55 connected to the contact pieces 47 and 50 by the lead wire 51 are provided on both sides of the box portion 42. It is projected.

The stepped rear opening portion of the insertion pipe 6 is fitted into the stepped outer peripheral portion of the flange 19 via the tight ring 58, and the concave groove 16 of the rotary pipe 15 is in contact with the inner peripheral surface of the insertion pipe 6. The tight ring 59 is attached.

In the above structure, the intake port 4 of the cleaner body 1 is set in a non-circular shape so that the box portion 46 can also fit therein, so that the insertion pipe 6 inserted into the intake port 4 is prevented from rotating. It is fixed with a buckle 14 on top. When the hose 5 is twisted, the rotary pipe 15 rotates in the insertion pipe 6 by the amount of the twist and returns the twist. A signal from the remote control operating body 11 is a remote control conductive wire of the hose 5, lead wires 38, 39, 40, 41, ring-shaped rails 30, 31, 32, 33, contact pieces 48, 49 ,.
It is transmitted to the lead wire 51 and the remote control terminals 52 and 53, and flows to the electric controller 3 through the wiring inside the cleaner body 1.

On the other hand, the power source applied to the cleaner body 1 includes power supply terminals 54 and 55 lead wires 51, contact pieces 47 and 50, ring-shaped rails 30, 31, 32 and 33, and lead wires 38 and 3.
It flows through 9, 40, 41, the power supply conductive wire of the hose 5, the electric motor operating body 12, and then is supplied to the electric motor 7 in the floor nozzle 8 via the cord 13.

[0012]

However, in the above structure, the lid 46 and the insertion pipe 6 are divided, and the contact piece 47,
Since 48, 49, 50 and the buckle are biased by spring pressure in the direction in which the gap between the lid 46 and the insertion pipe 6 expands, a gap is easily formed, and dust enters through the gap and the dust that has entered the ring. The rails 30, 31, 32, 33 reach the contact rails 47, 48, 49, 50, and enter the contact portions, causing poor contact.

Further, it also causes the wear of the contact pieces 47, 48, 49, 50 to be accelerated. In addition, when the dust absorbs water, the adjacent rails 30, 31, 3 are adjacent to each other.
Short circuit between 2 and 33 may lead to smoke and fire.
There is also a problem that the contact pressure of the contact pieces 47, 48, 49, 50 changes depending on the amount of the gap. Further, since the retaining piece 109 provided on the lid 46 is retaining in only one direction, when the rotation axes of the insertion pipe 6 and the rotating pipe 15 are bent,
There was a difference in contact pressure between the front and rear ends of the contact pieces 47, 48, 49, 50, which caused a slippage of the contact pieces 47, 48, 49, 50.

The contact pieces 47, 48, 49, 50 are fixed to the lid 46, while the ring-shaped rails 30, 31, 3 are provided.
2 and 33 are fixed to the rotary pipe 15 via the annular rail stands 20 and 21, so the rotary pipe 15 and the insertion pipe 6
The movement of is the same as the ring-shaped rail Ring-shaped rail 30,
Axial slippage and blurring occur due to transmission between 31, 32, 33 and the contact pieces 47, 48, 49, 50, and sliding marks of the contact pieces 47, 48, 49, 50 on the ring-shaped rail surface are two lines. As a result, there is a problem that the ring-shaped rails 30, 31, 32, and 33 wear quickly.

Further, when the annular rail stands 20 and 21 are attached to the rotary pipe 15, they are set through the annular concave groove at the tip of the rotary pipe 15. Therefore, the inner diameters of the annular rail stands 20 and 21 must be set larger than the diameter of the rotary pipe 15. However, there is a problem that the external shape becomes large. Further, the positioning lips of the annular rail bases 20 and 21 and the rotary pipe 15 have some gaps for mounting, and the contact piece 4
There is also a problem that the contact pressure constantly changes during the rotating operation because the annular rail bases 20 and 21 pressed by 7, 48, 49 and 50 move in the pressing direction.

Further, the remote control terminal 5
2, 53, feeding terminals 54, 55 and contact pieces 47, 48, 4
Since 9 and 50 are connected by the lead wire 51, the flexibility of the work is large, but the wiring error by the operator is likely to occur. As a result, there was a problem that smoke and ignition due to sparks between different poles would occur.

The present invention solves the above-mentioned conventional problem by preventing twisting of the hose and by double-shielding the sliding contact portion to prevent dust from entering and the contact state of the contact piece to be kept. The object is to obtain a compact and easy-to-assemble hose for an electric vacuum cleaner, which is always constant during rotation of the hose, and has a long-lasting contact piece.

[0018]

A hose for an electric vacuum cleaner according to the present invention is fixed to an end portion of the hose and has a rotating pipe having a conductive ring-shaped rail on an outer peripheral circle and the ring-shaped rail. A conductive part cover having a contact piece and a connecting terminal that are in contact with each other; and an insertion pipe externally fitted to the conductive part cover so that the rotary pipe is rotatable in the circumferential direction and fixed to the conductive part cover by external fitting. , Is provided.

Further, the insertion pipe is provided with an engaging portion which engages with a convex portion provided on the outer periphery of the conductive portion cover.

[0020]

[0021]

The conductive part cover is divided into two parts, and each of the conductive covers is provided with a contact piece.

[0023]

Further, a bent portion is provided near the mounting portion of the connection terminal.

Further, the contact piece has an H-shaped mounting portion, a pair of free ends which stand upright from the intermediate portion of the mounting portion in a substantially V-shape, and which come into contact with the ring-shaped rail, and from the mounting portion to the free space. And a connecting piece extending on the side opposite to the end and bent at a predetermined position.

Further, the ring-shaped rails are provided with the connecting portions for connecting the lead wires, which are displaced from each other in the circumferential direction.

Further, rail holding plates for holding both ends of the ring-shaped rail are provided, the ring-shaped rail is wound around the rotary pipe, and the rail holding plate is fixed to the rotary pipe.

[0028]

Further, the conductive portion cover and the retaining portion of the insertion pipe are provided between the conductive portion cover and the engaging portion of the rotary pipe.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a hose portion of an electric vacuum cleaner, FIG. 2 is an exploded perspective view of FIG. 1, FIG. 3 is an assembled sectional view of a rotary pipe and a ring rail, and FIG. 4A is an arrow A of FIG. 4 is a side view seen from the direction of the arrow B in FIG. 3, FIG. 5 is a top view and a bottom view of the conductive cover, FIG. 6 is a cross-sectional view of FIG. 5, and FIG. 8 is an assembled sectional view of the conductive cover and the rotating pipe, and FIG. 9 is an explanatory view of processing and assembly of the ring-shaped rail.

In FIG. 1, (a) is a perspective view as seen from the hose side, 5 is a hose, 61 is an insertion pipe fixed to the intake port 4 of the vacuum cleaner body 1, and 63 is an insertion pipe. A buckle that holds the intake pipe 61 in the intake air 4 of the cleaner body 1,
93 is a cover. (B) is the cover 93 of FIG. 1 (a).
FIG. 6 is a perspective view of the hose 5 when it is detached from the insertion pipe 61 side, and 62 is a rotary pipe fixed to the end of the hose 5 and fitted in the insertion pipe 61 so as to be rotatable in the circumferential direction.

2, FIG. 3, and FIG. 4, 64 is an annular groove provided on the outer peripheral surface of the tip of the rotary pipe 62, and 65 is an outer peripheral surface of the rotary pipe 62 at the approximate center in the longitudinal direction. The annular recessed groove 66 is a four-rail rail base provided on the outer peripheral surface of the rotary pipe 61.

Reference numerals 67, 68, 69 and 70 denote ring-shaped rails on which a conductive material is mounted along the rail base 66 of the rotary pipe 62, and both ends of the ring-shaped rails 67, 68, 69 and 70 are U-shaped. The bent portion 71 bent inward is held by the rail holding plate stopper 72.

Reference numeral 73 denotes a space portion provided in a part of each of the rail bases 66 in the circumferential direction, and a space portion for fitting and fixing the rail holding plate 72, and 74 denotes a rail base 66 on the opposite side of the space portion 73.
And a lead wire locking groove provided in a part of the annular groove 65.

Reference numeral 75 is a claw portion which is provided on the space portion 73 side of the convex portion of the annular concave grooves 64 and 65 and holds the rail holding plate stopper 72 on the outer peripheral surface of the rotary pipe 62.

76 is a ring-shaped rail 67, 68, 69,
It is provided in the substantially central part of 70 with different circumferential phases,
It is a connecting portion for connecting the lead wire 111 for remote control and power feeding.

Reference numeral 77 denotes a pair of semi-cylindrical conductive portion covers having a convex portion 77a, and an engagement lip arranged on the inner peripheral surface of the conductive portion cover 77 so as to engage with the annular concave groove of the rotary pipe 62. 78 is formed, and the pair of conductive portion covers 7 is formed.
7 is rotatably fitted into the annular recessed grooves 64, 65 of the rotary pipe 62 and attached thereto. Convex portion 7 of conductive portion cover 77
A set of contact pieces 80, 81 is attached to the back side of 7a.

The contact pieces 80, 81 are made of a conductive material having a spring property, and are set up in a substantially V shape from the H-shaped mounting portions 84, 85 and an intermediate portion between the mounting portions 84, 85. A pair of free ends 82 and 83 that abut against any one of the ring-shaped rails 67 , 68 , 69 , and 70 , and extend from the mounting portions 84 and 85 to the opposite sides of the free ends 82 and 83, and are bent at predetermined positions. And connecting pieces 87 and 88.

The contact pieces 80, 81 are attached by connecting pieces 87,
88 with the inside facing each other and inserted into the hole 86 provided in the conductive portion cover 77, and the free ends 8 of the contact pieces 80, 81 are inserted.
2,83 ring-shaped rail 67,68,69,70 Noi
They are arranged so that they are in contact with each other at a predetermined angle at a certain angle. Next, the protrusion 89 provided inside the conductive portion cover 77 is attached to the attachment holes 11 provided in the attachment portions 84 and 85.
The protrusion 89 is thermally deformed and fixed by passing through 2 and 113.

As shown in FIG.
As shown in FIG. 6, the remote control terminal 90 is mounted on the side opposite to the surface on which the contact pieces 80, 81 are mounted, and the power supply terminal 91 is mounted on the other conductive portion cover 77.
The terminals and the contact pieces 80 and 81 are insulated from each other by the conductive portion cover 77, and the remote control terminal 90 is provided.
Also, the power supply terminal 91 is joined to the connecting pieces 87 and 88 protruding into the hole 86 of the conductive portion cover, respectively. Note that FIG.
5A is a top view of the conductive cover 77, FIG. 5B is a bottom view of the conductive portion cover 77, and FIG. 6 is a view A of FIG. 5B.
It is a sectional view of -A.

The tip of each terminal is formed in the shape of a round pin, and the bent portions 90a and 91a are provided by changing the height with respect to the mounting surface of the conductive portion cover 77. The remote control contact pieces 80, 81 are arranged so as to contact the remote control rails 67, 69, and the power supply contact pieces 80, 81 for contact with the power supply rails 68, 70, respectively.

The insertion pipe 61 is integrally formed,
The engaging portions 61a are provided on the outer circumferences of the cylinder which are opposed to each other, and the engaging portions 61a are engaged with the convex portions 77a of the conductive portion cover 77 that engages with the engaging portion 61a to prevent them from rotating, and the claws that are the retaining portions provided on the conductive portion cover 77 94 engages with the engaging hole 95 of the conductive cover and is prevented from being pulled out by the insertion pipe 61.

2 and 7 (a), a sectional view of the attachment portion of the buckle 63 to the insertion pipe 61 in the direction perpendicular to the axis and FIG. 7 (b).
As shown in the axial sectional view of FIG. 1, a buckle 63 is attached to one of the engaging portions 61a of the insertion pipe 61 from the inner wall of the insertion pipe by providing a spring 100 below the lock portion 99 at the tip. By 101, the outward dislocation is prevented, and by the stopper 102, the inward disengagement is prevented. The buckle 63 is movable with respect to the engaging portion 61a of the insertion pipe 61, and is constantly urged in the locking direction by the spring 100.

As shown in FIG. 7, the remote control terminal 90 and the power supply terminal 91 attached to the conductive portion cover 77 are inserted through a pin hole 98 provided in front of the engaging portion 61a of the insertion pipe 61. It is projected in front of the pipe,
The rotary pipe 62 with the conductive portion cover attached to the insertion pipe 61 is attached via the packing 103.

Here, the engaging rib 78 of the conductive portion cover 77 is provided.
The relationship between the nail and the claw 94 will be described.

FIG. 8 shows an engaging rib 78a of the conductive portion cover 77.
8A shows a case where the claw 94 is located closer to the rotary pipe 62 than the engaging rib 78a, and FIG.
In (b), the claw 94 is inserted into the insertion pipe 61 more than the engagement rib 78a.
Shows when it is on the side.

In FIG. 8 (a), when the rotary pipe 62 is pushed toward the insertion pipe 61, the conductive portion cover 77 is deformed inward with the engaging rib 78a as a fulcrum, so that the claw 78 is easily disengaged.

On the other hand, in FIG. 8B, when the rotary pipe 62 is pulled from the side of the insertion pipe 61, the conductive portion cover 77 is deformed inward with the engaging rib 78b as a fulcrum, so that the claw 94 is easily disengaged. Therefore, it is preferable that the engaging ribs 78b are provided at two or more positions in the axial direction, and the claw 94 is formed between the engaging ribs 78a and 78b.

Next, the ring-shaped rails 67, 68, 69,
70 processing method and ring-shaped rails 67, 68, 69, 7
The assembly of 0 and the rail holding plate 72 will be described with reference to FIG.

First, as shown in FIG. 9A, conductive materials are connected by the connecting portion 104, and the rails 67, 68, 69, 70 are connected.
The primary processing rails 107 are pressed into a shape in which four of them are arranged in parallel.

Next, as shown in FIG. 9B, engaging holes 108 are formed at both ends of the primary processing rail 107 to form a bent portion 71 bent inward in a U-shape.

Next, as shown in FIG. 9C, the projections 106 of the rail holding plate 72 are engaged with the engaging holes 108 of the bent portions 71 at both ends of the primary processing rail 107 to assemble.

Next, the connecting portion 104 is cut with a hand press or the like.

In this way, as compared with assembling the rails one by one on the rail holding plate 72, the positioning is easier and the workability can be improved.

[0056]

Since the present invention is constructed as described above, it has the following effects.

The hose of the vacuum cleaner according to the present invention is
A rotating pipe fixed to the end of the hose and having a conductive ring-shaped rail on the outer circumference, a conductive part cover having a contact piece and a connection terminal that come into contact with the ring-shaped rail, and the conductive part cover pipe is freely circumferential rotation
Since it is equipped with an insertion pipe that is externally fitted and fixed to the conductive portion cover, the hose is reliably prevented from twisting, and the ring-shaped rail and the sliding guide contact portion of the contact piece are provided. The conductive cover and the insertion pipe doubly shield to prevent dust from entering and the contact state of the contact piece is always constant during the rotation of the hose, which allows the contact piece to last longer.

Further, since the insertion pipe is provided with the engaging portion which engages with the convex portion provided on the outer periphery of the conductive portion cover, the deformation due to the twisting force and the bending force applied to the insertion pipe is directly applied to the contact piece. Therefore, the contact state between the contact piece and the ring-shaped rail can be stabilized.

[0059]

[0060]

Further, since the conductive portion cover is divided into two parts, and each of the conductive covers is provided with a contact piece, the assembly is easy and the pressing balance of the contact piece is uniform, so that the ring-shaped rail can be contacted without applying an unreasonable force. It is possible to prevent one piece from slipping.

[0062]

Further, since the bent portion is provided in the vicinity of the mounting portion of the connecting terminal, the axial movement on the pin side is absorbed, and no force is directly applied to the connecting portion of the contact piece.

Further, the contact piece is provided with an H-shaped mounting portion, a pair of free ends which are erected from the intermediate portion of the mounting portion in a substantially V-shape, and which are in contact with the ring-shaped rail, and from the mounting portion to the free space. Since the connecting piece that extends to the side opposite to the end and is bent at a predetermined position is provided, even if the free end is compact, the mounting portion is wide and fixing can be easily performed.

Further, since the connecting portions for connecting the lead wires to the ring-shaped rails are provided so that their circumferential positions are displaced from each other, the width of the lead wire locking groove can be made small, so that the rail base can be widened. The ring-shaped rail can be held in a predetermined shape.

Further, since rail holding plates for holding both ends of the ring-shaped rail are provided and the ring-shaped rail is wound around the rotary pipe and the rail-holding plate is fixed to the rotary pipe, the ring-shaped rail is fixed to the rotary pipe. Since the eccentricity does not occur and it is not necessary to insert the rotary pipe into the ring-shaped rail for assembly, the diameter of the ring-shaped rail can be reduced.

[0067]

Further, since the conductive portion cover and the retaining portion of the insertion pipe are provided between the conductive portion cover and the engaging portion of the rotary pipe, it is possible to prevent the conductive portion cover from coming off the rotary pipe. it can.

[Brief description of drawings]

FIG. 1 is a perspective view of a hose of an electric vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of FIG.

FIG. 3 is an assembled sectional view of a rotary pipe and a ring rail of a hose of an electric vacuum cleaner.

FIG. 4 is a side view of FIG.

FIG. 5 is a top and bottom view of the conductive cover of the hose of the electric vacuum cleaner.

6 is a cross-sectional view of FIG.

FIG. 7 is a cross-sectional view of the attachment portion of the hose buckle.

FIG. 8 is an assembled sectional view of a conductive cover, a rotary pipe, and an insertion pipe.

FIG. 9 is an explanatory diagram of processing and assembly of a ring-shaped rail.

FIG. 10 is a perspective view of a conventional electric vacuum cleaner.

FIG. 11 is an exploded perspective view of a main part of a hose of a conventional electric vacuum cleaner.

FIG. 12 is a perspective view of a hose of a conventional vacuum cleaner on a side of an insertion pipe.

FIG. 13 is a rear view of the lid of the hose of the conventional vacuum cleaner.

[Explanation of symbols]

61 insert pipe, 61a engaging part, 62 rotating pipe, 63 buckle, 63a lock part, 66 rail base, 6
7, 68, 69, 70 Ring-shaped rail, 72 Rail holding plate, 76 Connection part, 77 Conductive part cover, 77a Convex part, 78 Engagement lip, 80, 81 Contact piece, 82, 83
Free end, 84, 85 mounting part, 87, 88 connecting piece, 90
Remote control terminal, 91 Power supply terminal, 90
a, 91a bent portion, 86 hole, 100 spring,
104 connecting part, 111 lead wire.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-182227 (JP, A) JP-A 1-126938 (JP, A) JP-A 7-148098 (JP, A) JP-A 4- 126114 (JP, A) JP 63-252123 (JP, A) Actual opening 50-106061 (JP, U) Actual opening 63-129558 (JP, U) Actual opening Flat 5-18447 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47L 9/24

Claims (8)

(57) [Claims] 1. A rotating pipe fixed to an end of a hose and having a conductive ring-shaped rail on an outer peripheral circle, a conductive part cover having a contact piece and a connection terminal that come into contact with the ring-shaped rail, The above-mentioned rotary pipe is freely rotatable in the circumferential direction.
Hose vacuum cleaner, characterized in that it and a plug pipe is externally fitted and fixed to the conductive cover while the outer fitting so. 2. The hose for an electric vacuum cleaner according to claim 1, wherein the insertion pipe is provided with an engaging portion that engages with a convex portion provided on the outer periphery of the conductive portion cover. 3. The hose for an electric vacuum cleaner according to claim 1, wherein the conductive part cover is divided into two parts, and each conductive cover is provided with a contact piece. 4. The hose for an electric vacuum cleaner according to claim 1, wherein a bent portion is provided in the vicinity of the mounting portion of the connection terminal. 5. An H-shaped mounting part, a pair of free ends that stand in a substantially V-shape from an intermediate part of the mounting part, and are in contact with a ring-shaped rail, and the mounting part has the play part. The hose of the electric vacuum cleaner according to claim 1, further comprising: a connecting piece that extends to a side opposite to the end and is bent at a predetermined position. 6. The hose for an electric vacuum cleaner according to claim 5, wherein the ring-shaped rail is provided with connecting portions for connecting the lead wires, the positions being displaced in the circumferential direction. 7. The rail holding plate for holding both ends of the ring-shaped rail is provided, and the ring-shaped rail is wound around the rotary pipe to fix the rail holding plate to the rotary pipe. Vacuum cleaner hose. 8. The conductive portion cover and the retaining portion of the insertion pipe are
The hose for an electric vacuum cleaner according to claim 1, wherein the hose is provided between the conductive portion cover and the engaging portion of the rotary pipe.